I have 15 .22 conversion inserts for use with the M261 (Army) conversion bolt. These are used, but still in good shape. For merely $17.50 each they will be delivered to your door via USPS with delivery confirmation. If you want insurance add $1.30 per order, no matter how many you buy.
I also have about 80 muzzle covers that I would like to get rid of for .50 apiece. I will charge you an additional $2.50 to ship them; no matter how many you want.
You will notice this is my first post on this board. If you have any doubts about my authenticity please check my feedback ratings at Ebay and Gunbroker. My username in both places is eaelms.